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From:   Vasily Averin <vvs@virtuozzo.com>
Subject: [PATCH 3/7] ext4: lost release of s_journal_flag_rwsem on rollback in
 ext4_fill_super
To:     linux-ext4@vger.kernel.org, Theodore Ts'o <tytso@mit.edu>
Cc:     Andreas Dilger <adilger.kernel@dilger.ca>,
        linux-kernel@vger.kernel.org, Daeho Jeong <daeho.jeong@samsung.com>
References: <cover.1541011937.git.vvs@virtuozzo.com>
Message-ID: <2a41b591-ce2e-e4e1-d86a-e0fd18e77ccd@virtuozzo.com>
Date:   Wed, 31 Oct 2018 22:12:35 +0300
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Fixes c8585c6fcaf2 ("ext4: fix races between changing inode journal ...") # 4.7

cc: Daeho Jeong <daeho.jeong@samsung.com>
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
---
 fs/ext4/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ed4d36506ec2..0c9e165b4e3f 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4511,6 +4511,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	percpu_counter_destroy(&sbi->s_freeinodes_counter);
 	percpu_counter_destroy(&sbi->s_dirs_counter);
 	percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
+	percpu_free_rwsem(&sbi->s_journal_flag_rwsem);
 failed_mount5:
 	ext4_ext_release(sb);
 	ext4_release_system_zone(sb);
-- 
2.17.1